IMO I'd scrap the decor and just pack it with live plants. The decor could cut your male's fins. They also dart around a lot (especially the female as she might try to escape the male) so rough decor could injure her (cuts, scrapes, open wounds..).

Use stemmed plants like anarachis and ludwigia... Java moss is always ideal.

I agree with Darkmoon. In general the more liive aquatic plants, the better. I like java fern and it is a love/hate relationship with duckweed. I assume that is an artificial coral from a mold in your photo because a real coral skeleton would make the ph of the water way too high for betta fry.

I would take the pair out now, and start over. You need a lot more plants in there :)

I would stay away from anything artificial or fake in a breeding tank, especially if it is sharp and rough. Also, they don't provide much of a hiding space for the female. Those pieces of plants will likely die (they are already turning brown) and dirty the water, so stick with whole plants. They really need plants from top to bottom, because just having plants floating on the surface doesn't provide any spots to hide. Just wondering, what type of plants are those?

I agree with all of the above. What kind of plants are those anyways? They don't look aquatic to me.

Breeding is not something you can skimp on. I had to save for 6 months before I had all the necessary items I needed to breed. That included enough live plants not only to have good cover in the spawn tank but also enough for some cover in the grow out.

You want the tank to be so full of things you have a hard time seeing into it.